Submitted on: 08 October 2019.
Revised on: 11 November 2019.
Accepted on: 07 December 2019.
___________________Environmental and Sustainability Indicators
Submitted on: 01 January 2009.
Revised on: 23 February 2009.
Accepted on: 18 April 2009.
___________________Environmental and Sustainability Indicators
Submitted on: 24 August 2006.
Revised on: 05 December 2006.
Accepted on: 30 December 2006.
___________________Environmental and Sustainability Indicators
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Submitted on: 11 February 1999.
Revised on: 07 June 1999.
Accepted on: 03 July 1999.
___________________Environmental and Sustainability Indicators
Submitted on: 21 December 2019.
Revised on: 16 April 2020.
Accepted on: 18 May 2020.
___________________Environmental and Sustainability Indicators
Submitted on: 19 March 2015.
Revised on: 08 May 2015.
Accepted on: 02 June 2015.
___________________Environmental and Sustainability Indicators
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Submitted on: 02 October 2005.
Revised on: 14 December 2005.
Accepted on: 29 December 2005.
___________________Environmental and Sustainability Indicators
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